Examples with Factor com.sri.ai.praise.core.representation.interfacebased.factor.api.Factor used on opensource projects

Example 51 with Factor

use of com.sri.ai.praise.core.representation.interfacebased.factor.api.Factor in project aic-praise by aic-sri-international.

the class AbstractExactBPNode method sumOutWithBookkeeping.

/**
 * Returns the result of eliminating given indices from given factor, plus whatever bookkeeping such as printing information or recording size of computation
 * (since this is one of the most expensive steps).
 * @param variablesToBeSummedOut
 * @param factor
 * @return
 */
@Override
public Factor sumOutWithBookkeeping(List<? extends Variable> variablesToBeSummedOut, Factor factor) {
    Factor result = factor.sumOut(variablesToBeSummedOut);
    printTracingInformation(factor, variablesToBeSummedOut, result);
    return result;
}

Example 52 with Factor

use of com.sri.ai.praise.core.representation.interfacebased.factor.api.Factor in project aic-praise by aic-sri-international.

the class GradientAnytimeExactBP method createNormalizedMinFactorWithoutOneSub.

private Factor createNormalizedMinFactorWithoutOneSub(Anytime<Factor> sub, Collection<? extends Variable> rootIndices) {
    Polytope rootPolytopeWithoutOneSub = productWithoutOneSub(sub);
    IntensionalConvexHullOfFactors rootConvexHullWithoutOneSub = (IntensionalConvexHullOfFactors) rootPolytopeWithoutOneSub;
    Factor rootFactorWithoutOneSub = rootConvexHullWithoutOneSub.getFactor();
    Factor minRootFactorWithoutOneSub = rootFactorWithoutOneSub.min(rootIndices);
    Factor normalizedMinFactorWithoutOneSub = minRootFactorWithoutOneSub.normalize();
    return normalizedMinFactorWithoutOneSub;
}

Example 53 with Factor

use of com.sri.ai.praise.core.representation.interfacebased.factor.api.Factor in project aic-praise by aic-sri-international.

the class GradientAnytimeExactBP method createNormalizedMaxFactorWithoutOneSub.

private Factor createNormalizedMaxFactorWithoutOneSub(Anytime<Factor> sub, Collection<? extends Variable> rootIndices) {
    Polytope rootPolytopeWithoutOneSub = productWithoutOneSub(sub);
    IntensionalConvexHullOfFactors rootConvexHullWithoutOneSub = (IntensionalConvexHullOfFactors) rootPolytopeWithoutOneSub;
    Factor rootFactorWithoutOneSub = rootConvexHullWithoutOneSub.getFactor();
    Factor maxRootFactorWithoutOneSub = rootFactorWithoutOneSub.max(rootIndices);
    Factor normalizedMaxFactorWithoutOneSub = maxRootFactorWithoutOneSub.normalize();
    return normalizedMaxFactorWithoutOneSub;
}

Example 54 with Factor

use of com.sri.ai.praise.core.representation.interfacebased.factor.api.Factor in project aic-praise by aic-sri-international.

the class GradientAnytimeExactBP method createNormalizedMinFactor.

private Factor createNormalizedMinFactor(Collection<? extends Variable> rootIndices) {
    Approximation<Factor> rootApproximation = getCurrentApproximation();
    IntensionalConvexHullOfFactors rootConvexHull = transformApproximationToConvexHullOrThrowsErrorIfNotPossible(rootApproximation);
    Factor rootFactor = rootConvexHull.getFactor();
    Factor minFactor = rootFactor.min(rootIndices);
    Factor normalizedMinFactor = minFactor.normalize();
    return normalizedMinFactor;
}

Example 55 with Factor

use of com.sri.ai.praise.core.representation.interfacebased.factor.api.Factor in project aic-praise by aic-sri-international.

the class GradientAnytimeExactBP method getAbsoluteVolumeVariationWithRespectTo.

@Override
public Double getAbsoluteVolumeVariationWithRespectTo(Anytime<Factor> sub) {
    if (sub.equals(null)) {
        throw new Error("Sub does not exist, can't compute volume variation");
    }
    Approximation<Factor> subApproximation = sub.getCurrentApproximation();
    AtomicPolytope subAtomicPolytope = transformApproximationToAtomicPolytopeOrThrowsErrorIfNotPossible(subApproximation);
    Set<? extends Variable> subAtomicPolytopeIndices = getIndices(subAtomicPolytope);
    if (evenOneSubWithTotalIgnoranceRendersApproximationEqualToTotalIgnorance()) {
        // root is a variable
        return getAbsoluteVolumeVariationFromFactorToVariableWithRespectTo(sub, subAtomicPolytopeIndices);
    }
    return getAbsoluteVolumeVariationFromVariableToFactorWithRespectTo(sub, subAtomicPolytopeIndices);
}